I had a session with Maria and asked her if she was open to duos. She said "probably" and encouraged me to talk to Anna about it because her and Anna are friends. So I had a session with Anna (was going to anyway), asked her, she said "probably" but also "not sure what we would do cuz I've never done it." I was only looking for alternating BBBJ. Problem is Maria provides it and Anna (at least, for me, at the time, YMMV) only provides CBJ. So I decided not to waste the money.